Ors to said read



N0. 6"],987. Patented Sept. 20, I898.

L. E.. HENDRICKSUN & C. H. READ.

DENTAL TOOL.

(Application filed. Jan. 22, 1898.) (No Model.)

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CNITED STATES LOREN E. HEN DRICKSON AND CHARLES H. READ, OF OGDEN, IOl/VA, ASSIGN- ORS TO SAID READ, CLARENCE L. THOMAS, AND ORRIN L. STURTEVANT, OF SAME PLACE.

DENTAL TOOL.

SPECIFICATION forming part of Letters Patent No. 610,987, dated September 20, 1898.

Application filed January 22, 1898. Serial No. 667,619. (No model.)

To all whom it may concern: slot C, in which the pin B upon the crank- Be it known that we, LOREN E. HENDRIOK: arm B will lie and operate. SON and CHARLES H. READ, citizens of the At opposite ends of thetool-holder are arms United States, residing at Ogden, in the D, which may be of spring or other yielding county of Boone, State of Iowa, have invent material and which are rigidly connected to 55 ed certain new and useful Improvements in the holder C. The outer ends of these arms Dental-Engine Attachments, of which the folare provided with eyes or sockets D, Within lowing is aspecification,reference being had which the adjustable hooks E are located. therein to the accompanying drawings. These hooks are provided with slotted heads This invention relates to dental-engine at- E, by which they may be rotated to adjust 6o tachments particularly adapted for the apthe angle of the saw relative to the arms, and plicati'on of areciprocating tool, such as a saw the inner ends of these hooks are provided or file. with seats E centrally slotted, as at E for The invention has for its object to provide, the reception of a saw-blade F or other suit- I 5 anovel construction of tool-holder,from which able tool to be used with the device. The 6 5 the tool can be readily removed and adjusted blade F is provided with projecting pins F, at any desired angle in relation to the holder. which lie against the straight wall of the It has for a further object to simplify the seat E and thus hold the saw in position. structural details by which the adjustment It is obvious that the structure of these seats and holding of the tool are performed, so that maybe altered to adapt the same for use with the operation of the device may be improved. different classes of tools and different meth- In the drawings, Figure 1 is a perspective ods of attachment. of the invention. Fig. 2 is a vertical cross- When it is desired to apply the saw or other section. Fig. 3 is a detail elevation of one tool to the holder, the arms D are sprung or 25 face of the tool-holder, and Fig. 4 is a detail pressed toward each other and the pins F perspective of the hook by which the tool is upon the blade F seated in the seats of the adjusted in the holder. hooks D, and when the pressure is released Like letters refer to like parts throughout from the arms the same will expand and sethe several figures of the drawings. curely hold the tool in position. By the ap- 0 The letter A designates a main cylindrical plication of any suitable tool to the slotted 8o casing provided at one end with an extension head E the angle of the saw may be changed A at right angles thereto and secured to the relatively to the arms. By the use of the casing A by means of screws a or other seslotted way C formed in the tool-holder, and curing means. The lower end of the casing the projection from the casing located there- 3 5 Ais provided withajournal-blockA through in all rotary movement of. the holder is prewhich extends adriving-shaft B, adapted at vented," while the recess upon the opposite one end to be connected with any suitable drivface thereof and the transverse slot, in coning mechanism actuated bya dental engine or nection with the crank arm and pin, form a other source of power. This shaft B has at permanent and rigid connection of the parts,

40 its lower end a crank-arm B, from the outer so that the reciprocation of the tool-holder is end of which a pin B extends. positively regulated in both directions, and

\Vithin the casing A a tool-holder C recip any unusual movement thereof which would rocates, and the same is held against rotary be dangerous and objectionable in the delimovement by means of a pin or screw 0, excate operations to which a tool of this char- 45 tending through the casing and traveling in acter is applied is prevented. It will be 010- a groove 0*, formed in one face of the toolvious that the rotation of the driving-shaft holder. The opposite face of the tool-holder B will impart a rapid reciprocatory movement is provided with an enlarged recess C gwithin to the tool-holder C, which carries thesaw or Which'the crank B may rotate, and substanother tool desired for use in connection with 50 tially central of this recess with a transverse the invention. 10o

It is obvious that changes may be made in the details of construct-ion and configuration of the several parts without departing from the spirit of the invention as defined by the appended claims.

Having described our invention and set forth its merits, what we claim, and desire to secure by Letters Patent, is

1. The combination with a casing, of a reciprocating tool-holder, means to reciprocate the same, arms extending from opposite ends of said holder, and a tool pivotally carried by said arms; substantially as specified.

2. The combination with a casing, of the reciprocating tool-holder, means to reciprocate the same, spring-arms extending from opposite ends of said holder, and a tool mounted to be rotatably adjusted within said arms; substantially as specified.

3. The combination with a casing, of-a reciprocating tool-holder, means for reciprocating the same, arms extending from opposite ends of said holder, pivotally-mounted hooks carried by said arms, and a tool detachably connected to said hooks; substantially as specified.

4. The combination with a casing, of a reciprocating tool-holder, means to reciprocate the same, spring-arms located at opposite ends thereo F, hooks formed with a slotted head and a seat and pivoted in said arms, and a tool detachably connected to said hooks; substantially as specified.

5. The combination with a casing, of a cylindrical reciprocating tool-holder provided upon one face with a slot adapted to receive a projection from the casing and upon its opposite face with a recess and a transverse slot, arms extending from the opposite ends of said tool-holder, and a tool removably and rotatably mounted upon the outer ends of said arms; substantially as specified.

6. The combination with a casing, of a reciprocating tool-holder, means to reciprocate the same, spring-arms extending from opposite ends of said tool-holder and provided at their outer ends With eyes or sockets, hooks provided with a pivoting-neck adapted to rotate in said sockets and provided at theirinner ends with slotted seats, and a tool-blade having thereon projections adapted to rest in said seats; substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses.

LOREN E. HENDRIOKSON. CHAS. I-I. READ.

\Vitnesses:

JULIUS KROUST, EDWARD B. SUcnEn. 

